Lexus RX400h brake failure issue experienced after backing out of parking spot, possible electronic malfunction on Lexus RX400h

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Lexus RX400h owners report experiencing brake failure issues, such as brakes automatically releasing and reapplying when constant pressure is applied to the brake pedal. These problems may be linked to electronic malfunctions, including sensor issues and calibration problems that affect the Electronic Parking Brake. Additionally, warning lights like "Check AWD System," engine light, VSC, and Traction Control System lights illuminating after starting the vehicle could signal a brake actuator failure. Furthermore, malfunctions in the Parking Support Brake system can occur if any of its components, such as sensors or the rear camera, fail to operate correctly. It is crucial for owners experiencing these issues to have their vehicles inspected by a qualified mechanic or Lexus service center to ensure safety and proper functioning.

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